#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	int i = 0;
	for (int year = 1001;(year > 1000) && (year < 2000);year++)
	{
		if (year % 400 == 0)
			printf("%d\n", year);
		else if((year %4 == 0)&&(year%100 != 0))
			printf("%d\n", year);
	}
	return 0;
}